Cabinet-enclosed window ventilating fan



April 14, 1953 s. .1. HEIMAN CABINET-ENCLOSED WINDOW- vmxmwmc FAN FiledFeb. 10, 1950' M 1 W Eur //\/VEN7'OB SIDNEY J. HEIMAN Patented Apr. 14,1953 UNITED STATES PATENT OFFICE CABINET-ENCLOSED WINDOW VENTI- LATINGFAN The invention relates generally to fans, but more particularly tosuch a fan that is mounted within a cabinet for placement in the windowof a room, for the purpose of cooling and ventilating the latter.

One of the principal objects of the invention is to so construct a fanof the kind described that it will operate with a minimum of noise andvibration, and therefore enhance the desirability of use of the same.

Another object of this invention is to provide a fan of the kinddescribed that will be simple to make and at low cost.

Yet another object of the invention is to so construct such a device,that there will be a U-shaped member or yoke to support the fan, andwherein a plurality of coil springs will suspend said yoke together withsaid fan load from overhead, so that the entire load will be yieldablyand resiliently thus suspended.

The invention has among its other objects, the production of a device ofthe kind described, that will be relatively simple, compact andeconomical in construction and operation, shall be adjustable so thatthe fan may be supported truly horizontal, have comparatively fewoperating parts, long-wearing, and which will be otherwise satisfactoryand efficient for use wherever deemed applicable.

Many other objects and advantages of the construction herein shown anddescribed, will be obvious to those skilled in the art to which thisinvention appertains, as will be apparent from the disclosures hereingiven.

To this end, my invention consists of the novel construction,arrangement, and combination of parts herein shown and described, andthe uses mentioned, as will be more clearly pointed out in the followingspecification.

In the drawings, wherein like reference characters represent like orcorresponding parts throughout the views,

Figure 1 is a perspective view of the device, as viewed from inside theroom in which it is positioned, and with a portion of the screenstructure omitted; and

Figure 2 is a perspective detail of portions of the same, in spreadapart relation, showing the manner of suspending the moving parts.

Referring more particularly to the drawings, wherein I have illustrateda preferred embodiment of the invention, there is shown a fan structurethat is intended to be placed in a window opening of a room that is tobe ventilated and cooled, there being a casing, housing or cabinet A toprotect the mechanism and to prevent the possibility of accidentalinjury to persons coming into contact with the fan.

To this end, I have provided the casing or cabinet A of any suitable orpreferred material, such as of sheet metal, having a front panel Iprovided with an enlarged opening 2 therethrough adapted to be inregistry with the fan sweep area and through which the air from the roomis adapted to be discharged by said fan.

The casing is also provided with the spaced apart side walls 3-3, thetop wall 4, rear wall 5 and bottom wall 6, so that said casing isapproximately of rectangular shape in horizontal cross-section.

Flanges I extend along each of the side walls 33 from front to rear ofthe casing, and placed well above the mid-height of the casing, for apurpose to be more clearly hereinafter set forth, these flanges beingsufiiciently sturdy to support the weight of the motor-driven fan unitsafely.

When having moving parts within a fairly large sheet metal structure,the noises of vibration and the like are magnified or intensified; henceany reduction in the number and intensities of such noises are wellreceived by the prospective users of such fans.

Therefore, I have found that by mounting the fan and motor unit fromabove, so that the weight of the same is freely supported and suspended,minimizes such noise-deterrent factor, and improves the installation.

A U-shaped support, having a pair of spacedapart side arms or legs 8-8and a web or crosspiece 9 interconnecting said arms at one end, is madeof relatively strong and rigid material, such as of steel bar bent tothe desired shape, and to accommodate itself to the approximatelyrectangular size and shape of the casing, somewhat as shown, is used asa mount for the combined fan and motor unit B. For example, a connectingpiece 10 may be interposed between said U-shaped support and motorportion of the fan unit, and riveted or otherwise fixedly secured to thesaid members, as seen most clearly in Fig. 2. When so connected, thearms 88 are arranged respectively at the sides of said fan unit.

A pair of suspension elements, such as the coil springs HH are arrangedto carry the moving load from the casing, as by mounting to the flanges1'i. The pair of springs at each side of the casing are spaced apart sothat one is adjacent the front of the casing and the other is adjacentthe rear of the same, so as to give proper balance to the load, and thelower ends of said springs are removably threaded through the aperturesl2 provided in the arms 8-8, while the upper ends of said springs aresimilarly connected to the flanges 11 at the apertures l3.

It is desirable that adjustment be provided in the event that thesprings are not perfectly alike in length or strength, and for thispurpose, a threaded element 14 may be interposed between the upperendsof said springs and the apertures 13, with adjusting nuts l5. Hence, thesprings may be adjusted as desired and needed, so that a the fan will beperfectly balanced and with its rotational axis truly horizontal andiinregistry with the center of the opening 2 in the front panel of thecasing or cabinet.

From the foregoing description, it is obvious that with the parts soinstalledandadjusted,the. fan and motor unit Will be resiliently oryieldably,

suspended from above, by said coil springs, and this will be the onlyconnection between the said unit and the cabinet; hence noises will bereduced to a minimum...

Having thus described my invention, it is obvious that variousimmaterial modificatiens may bemade in'the samewithout departin from thespirit of my invention; henceI donot wish to be understood as limitingmyself to the exact form, arrangement, construction and combination ofparts herein shownanddescribed, or the uses mentioned, except as limitedby the state of the art to which this invention appertains, and theclaims hereunto appended.

What I claim as new and desire to secure by of each of said side armsandmminectedsatrtheirde 4 zontal axis, of a casing for enclosing saidfan unit and upon which said fan unit is mounted and being approximatelyrectangular in horizontal cross-section, a U -shaped member having 5 apair of side arms and a cross-piece interconnecting said arms at oneend, flanges secured along the pair of opposed sides of said casing, anda pair of spaced-apart coil springs adjustably connected at their upperendsto ,each of said flanges and at their lower ends to each of saidarms to together resiliently support the entire load of said fan andU-shaped member from said casing.

3.'The combination with afan, of a casing having a side wall to eitherside of said fan and partially enclosing the latter, a U-shaped memherfor mounting said fan thereon, the pair of side arms, voiY-said memberextending substantially parallei to said casing side walls, and a pairof spaced-apart suspension springs connected between each of said casingside Walls and each armof said U. sharpedharembetufioinyiebrii ablysupporting the 'entirei ioadinsaiii d 4. The-combinatiomwithtmhonihont'a U -shaped yolr'eiinerztbeiff oimgctadqtorsaid said u aim; ch membemisidewall: and: tccieaemiarmi Cd; sai =dJes1ia/psd memheis ten. siisnen.from above.

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